"I'm very happy with this next step in my career," said Booth. "FC Bayern is one of the largest clubs in the world. Being here in Munich at the FC Bayern campus and taking the next steps in my development makes me very proud. "

The central midfielder has been a regular in the United States youth setup, featuring from U16 level to U19. He was also a member of the U.S.'s 2017 U17 World Cup team in India.

Booth is the latest Bayern signing to join the club from an MLS side in the past year, joining Chris Richards and Alphonso Davies, who came from FC Dallas and the Vancouver Whitecaps, respectively.